US7770659B2 - Rotary drive assembly for a drill rod - Google Patents

Rotary drive assembly for a drill rod Download PDF

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Publication number
US7770659B2
US7770659B2 US12/000,655 US65507A US7770659B2 US 7770659 B2 US7770659 B2 US 7770659B2 US 65507 A US65507 A US 65507A US 7770659 B2 US7770659 B2 US 7770659B2
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Prior art keywords
gear unit
gear
drive
housing
unit
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US12/000,655
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US20080164044A1 (en
Inventor
Henrik Uelhoff
Andreas Pikowski
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Eurodrill GmbH
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Eurodrill GmbH
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Assigned to EURODRILL GMBH reassignment EURODRILL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PIKOWSKI, ANDREAS, UELHOFF, HENRIK
Publication of US20080164044A1 publication Critical patent/US20080164044A1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/002—Drilling with diversely driven shafts extending into the borehole

Definitions

  • the invention relates to a rotary drive assembly for a drill rod having an outer tube and an inner rod extending at least in sections inside the outer tube, in particular for double-head and/or superposed drilling.
  • a rotary drive assembly of such type includes a first gear unit having at least a first drive unit for driving the inner rod in a rotating manner and at least a second gear unit, which is arranged offset to the said first gear unit in the longitudinal direction of the drill rod and has at least a second drive unit for driving the outer tube in a rotating manner.
  • Rotary drive assemblies for double-head drilling devices have two gear units arranged one behind the other in the longitudinal direction of the drill rod, in which case one of the gear units serves for the rotating operation of the inner rod while the other serves for the rotating operation of the outer tube of the drill rod.
  • a hydraulic drive unit is each mounted on the two associated gear housings, with the drive shaft of each gear unit being directly connected to the associated drive unit.
  • Such drive assemblies can have a comparatively large constructional length in the direction of the drill rod, that results from the sum of the constructional lengths of both gear units as well as both drive units.
  • a constructional length as short as possible is generally to be aimed for.
  • the object of the invention is to provide a rotary drive assembly which can be employed in a great variety of applications whilst ensuring a high reliability and which has, in particular, an especially short constructional length.
  • a rotary drive assembly having a first gear unit having at least a first drive unit for driving the inner rod in a rotating manner and a second gear unit, which is offset to the first gear unit in the longitudinal direction of the drill rod and has at least a second drive unit for driving the outer tube in a rotating manner, wherein the second drive unit is spaced from the second gear unit and the second drive unit is arranged adjacent to the first drive unit on the first gear unit.
  • the rotary drive assembly according to the invention is characterized in that the second drive unit is spaced from the second gear unit and that the second drive unit is arranged adjacent to the first drive unit on the first gear unit.
  • the drive unit for the outer tube is not provided directly on the gear unit for the outer tube but that this drive unit is rather arranged in the area of the rear gear unit for the inner rod, which is offset backwards with respect to the gear unit for the outer tube in a direction contrary to the drilling direction.
  • the space required for drive means in the area of the second gear unit close proximity to the borehole is reduced which may be of advantage with regard to operational safety and reliability.
  • the drive unit for the outer tube can be arranged by being spaced from the intermediate space between the two gear units so that these gear units can be positioned especially close to each other and a particularly small constructional length and therefore a particularly great insertion depth can be achieved.
  • the invention allows for a particularly simple and compact installation of the operating lines of the drive units, especially of hydraulic lines, and of control valves that may perhaps be provided, since these lines and valves can be joined in the area of the first, rear gear unit.
  • independent drive units are employed for the outer tube and the inner rod, it is possible for the outer tube and the inner rod to be operated independently of each other in an especially versatile way. More particularly, the rotational speed and/or the torque of the outer tube can be varied relative to the inner rod and provision can be made in a particularly simple manner for an operation both in the same and in opposite direction.
  • first drive unit and/or the second drive unit are arranged on a housing of the first gear unit, which permits an especially easy mounting of the two drive units.
  • these are arranged, at least to some degree, on the outside of the housing.
  • the first drive unit and/or the second drive unit are arranged on a rear side of the first gear unit that faces away from the second gear unit. Having such a rearward arrangement on the first gear unit, which lies at the rear as seen in the drilling direction, i.e. which faces away from the borehole, there is especially good access to the drive units and, in particular, without requiring a demounting of any gear units, which may be of advantage with regard to the maintenance of the drive units for example. What is more, this arrangement allows for an especially compact constructional design, and in particular for an especially short constructional length.
  • the second gear unit For a particularly simple and reliable transmission of force from the second drive unit to the second gear unit for the outer tube it is of advantage that for the operation of the second gear unit at least one drive shaft is provided, which extends from the second drive unit to the second gear unit.
  • the drive shaft is suitable for the drive shaft to extend, at least in sections, parallel to the drill rod.
  • a drive pinion of the second gear unit which can be designed as a spur gear for example, is arranged on the drive shaft.
  • a shaft is arranged on each of these drive units, which has a drive pinion for the second gear unit arranged in front as seen in the drilling direction. For best suitability, all of these shafts extend parallel to one another.
  • the drive shaft can be designed e.g. as a rigid shaft or as a Cardan shaft.
  • the design of the drive shaft as a Cardan shaft can be especially advantageous if the two gear units, which are preferably designed as spur gears, have a different transmission.
  • the drive pinions of the two gear units can have a different distance to the drilling axis.
  • the use of a Cardan shaft makes it possible to compensate the different center distances of the drive pinions to the drilling axis and to arrange the first drive unit for the inner rod and the second drive unit for the outer tube with the same center distance to the drilling axis.
  • the housing of the first gear unit has a recess through which the drive shaft for the second gear unit extends.
  • An especially economical rotary drive assembly is provided in that the first drive unit and the second drive unit are at least approximately of identical constructional design. In this case only a single type of drive unit needs to be kept in store for the production and repair of the rotary drive assembly.
  • the number of the second drive units is higher than the number of the first drive units. More particularly, two second drive units and one first drive unit can be provided. As a result, it is possible to supply a higher rotational speed, in particular a higher torque, to the outer tube as compared to the inner rod, whereby an especially good drilling progress can be attained.
  • the first drive unit is suitably located between the two second drive units.
  • the centrally arranged drive unit drives the gear unit of the inner rod, whereas the two outer drive units are assigned to the gear unit of the outer tube.
  • a rotary drive assembly having an especially simple and at the same time reliable construction is provided in that the first gear unit and/or the second gear unit has a spur gear.
  • the spur gear can have a single-stage or a multi-stage design.
  • a coupling for the inner rod is provided on the output shaft of the first gear unit and a coupling for the outer tube is provided on the output shaft of the second gear unit.
  • the two gear units have at least approximately the same transmission. If the same transmission of both gear units is provided, the number of the second drive units for the outer tube is suitably higher than the number of the first drive units for the inner rod and/or the at least one second drive unit is dimensioned with a higher performance than the at least one first drive unit, because, more often, a higher torque is required for the outer tube than for the inner rod.
  • the drive units each have a drive motor designed as a hydraulic motor.
  • the drive motor of at least one of the drive units can have a reduction gear that is designed as a planetary gear for example.
  • the drive units it is advantageous for the drive units to be arranged on an arc, preferably on a circular arc that extends around the drill rod and/or the drilling axis.
  • this may prove to be especially advantageous, namely in particular in the case in which more than two drive units are provided.
  • the drive units have at least approximately the same external dimensions.
  • a support plate is provided on which the drive units are arranged.
  • This support plate suitably extends perpendicularly to the drilling axis, i.e. the longitudinal axis of the drill rod.
  • the support plate can constitute a part, e.g. a back plate, of the gear housing of the first gear unit.
  • the housing of the first gear unit and/or a housing of the second gear unit are formed in a box-type manner.
  • the housing of the first gear unit is spaced from the housing of the second gear unit in the longitudinal direction of the drill rod.
  • a free space can preferably be formed between the two gear units, which permits access from the outside to the inner rod and/or allows an adapter device for the inner rod.
  • Such a free space can make a particularly easy mounting or demounting of the inner rod on the first gear unit possible.
  • At least one strut is provided that connects the housing of the first gear unit with the housing of the second gear unit.
  • Another preferred embodiment of the invention resides in the fact that the two gear units can be displaced relative to each other in the longitudinal direction of the drill rod. For instance provision can be made for the gear units to be displaced in opposition to each other in order to mount and/or demount the drill rod. Provision can also be made for the two gear units to be displaced in opposition to each other during drilling, which can lead to a corresponding relative movement of the inner rod, that is arranged in an axially fixed manner on the first drive unit, with respect to the outer tube, that is arranged in an axially fixed manner on the second drive unit. As a result, an especially versatile rotary drive assembly is obtained.
  • the drive shaft has a torque-fixed sliding seat for changing its length during a relative displacement of the gear units.
  • a sliding seat permits a change of length of the drive shaft and therefore a compensation of the change in the distance that occurs during displacement between the second drive unit, which is arranged in a fixed manner on the first gear unit, and the second gear unit.
  • the sliding seat can have a splined-shaft profile for example.
  • At least one linear drive in particular a hydraulic cylinder, can be provided.
  • this drive is arranged at least in sections in an area between the two gear units.
  • the linear drive extends at least in sections on a rear side of the first gear unit that faces away from the second gear unit.
  • a percussion unit for the drill rod is provided, by means of which the inner rod, in particular, can be operated in a striking manner.
  • the percussion unit is provided on the rear side of the first gear unit that faces away from the second gear unit.
  • the rotary drive assembly according to the invention is especially suitable for double-head drilling and/or superposed drilling. More particularly, the rotary drive assembly can be provided for a counter-rotating operation of the outer tube with respect to the inner rod.
  • the outer tube is designed as a drill tube having a drill bit arranged at its end.
  • the inner rod appropriately has an auger and, in particular, a soil-stripping portion arranged at the end.
  • the invention also comprises a method for producing a borehole, in particular in the soil, in which a drill rod having an outer tube and an inner rod extending at least in sections inside the outer tube is set in rotation and displaced axially by means of a rotary drive assembly according to the invention.
  • FIG. 1 shows a lateral view of an embodiment of a rotary drive assembly according to the invention
  • FIG. 2 shows a rear view of the rotary drive assembly of FIG. 1 ;
  • FIG. 3 shows a front view of the rotary drive assembly of FIG. 1 ;
  • FIG. 4 shows a top view of the rotary drive assembly of FIG. 1 with mounted drill rod and drill tube.
  • FIGS. 1 to 4 An embodiment of a rotary drive assembly according to the invention is shown in FIGS. 1 to 4 .
  • the rotary drive assembly has a first gear unit 10 to operate an inner rod 1 depicted in FIG. 4 in a rotating manner and a second gear unit 20 to operate an outer tube 2 depicted in FIG. 4 in a rotating manner, in which case the outer tube 2 encompasses the inner rod 1 coaxially.
  • Both gear units 10 , 20 are designed as spur gears.
  • the two gear units 10 , 20 are arranged in an offset manner in the direction of the drilling axis 41 that extends longitudinally and centrally through the inner rod 1 and the outer tube 2 .
  • the first gear unit 10 has a box-shaped housing 13 and the second gear unit 20 has a box-shaped housing 23 .
  • the two housings 13 , 23 are kept at a distance by means of struts 32 , 32 ′ that extend parallel to the drilling axis 41 and are arranged at their ends at a respective one of the housings 13 , 23 .
  • a first adapter coupling 16 for the inner rod 1 and a second adapter coupling 26 for the outer tube 2 are provided at the front side of the second gear unit 20 , which faces towards the drill rod and is arranged in front as seen in the drilling direction.
  • the first adapter coupling 16 for the inner rod 1 which is designed as a polygonal profile is arranged at its end on a shaft 15 that runs through the second adapter coupling 26 as well as the second gear unit 20 with its housing 23 and is guided to the first gear unit 10 , by which it can be operated in a rotating manner.
  • a free space 43 is formed that permits access to the shaft 15 between the two gear units 10 , 20 .
  • the second adapter coupling 26 for the outer tube 2 encompasses the shaft 15 coaxially and has clamping jaws 27 in order to secure the outer tube 2 in a rotatably fixed manner.
  • a drive unit 11 To operate the first gear unit 10 for the inner rod 1 in a rotating manner a drive unit 11 is provided. To operate the second gear unit 20 for the outer tube 2 in a rotating manner two drive units 21 , 21 ′ are provided. All three drive units 11 , 21 , 21 ′ are substantially constructed in the same, way, essentially having the same performance and being designed as hydraulic rotary drives.
  • All three drive units 11 , 21 , 21 ′ are arranged on the rear side of the first gear unit 10 on its housing 13 that faces away from the second gear unit 20 for the outer tube 2 .
  • the housing 13 of the first gear unit 10 On its rear side the housing 13 of the first gear unit 10 has a support plate 17 that extends perpendicularly to the drilling axis 41 and to which the drive units 11 , 21 , 21 ′ are flanged.
  • the drive units 11 , 21 and 21 ′ of substantially identical construction are arranged on a circle extending around the drilling axis 41 .
  • the drive unit 11 for the inner rod 1 is provided centrally between the two drive units 21 and 21 ′ for the outer tube 2 .
  • a respective drive shaft 28 , 28 ′ is provided on the drive units 21 , 21 ′.
  • the drive shafts 28 , 28 ′ run parallel to the drilling axis 41 and extend from the drive units 21 , 21 ′ through respective recesses in the housing 13 and through the free space 43 to the second gear unit 20 at the front.
  • drive pinions are arranged on the drive shafts 28 , 28 ′, which cannot be seen in the Figures and through which the second gear unit 20 can be operated.
  • the first drive unit 11 equally has a drive shaft that cannot be seen in the Figures.
  • a pinion is arranged on this drive shaft that serves to operate the first gear unit 10 .
  • a housing extension with at least one bearing location for the shaft 15 or alternatively for a percussion unit 49 is provided, through which the shaft 15 and therefore the inner rod 1 can be operated in a striking manner in the direction of the drilling axis 41 .
  • two hydraulic cylinders 52 , 52 ′ are provided that extend from the housing 13 towards the rear and parallel to the drilling axis 41 .
  • These cylinders 52 , 52 ′ can serve for the axial displacement of the inner rod 1 relative to the outer tube 2 .
  • these cylinders e.g. a fixed bearing for the shaft 15 and/or the inner rod 1 can be displaced axially.
  • hydraulic cylinders 52 , 52 ′ can serve for the axial displacement of the two gear units 10 , 20 relative to each other.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Dowels (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Drilling Tools (AREA)
  • Drilling And Boring (AREA)
US12/000,655 2006-12-18 2007-12-14 Rotary drive assembly for a drill rod Active US7770659B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06026207A EP1936109B1 (de) 2006-12-18 2006-12-18 Drehantriebsanordnung für ein Bohrgestänge
EP06026207 2006-12-18
EP06026207.8 2006-12-18

Publications (2)

Publication Number Publication Date
US20080164044A1 US20080164044A1 (en) 2008-07-10
US7770659B2 true US7770659B2 (en) 2010-08-10

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ID=37969884

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/000,655 Active US7770659B2 (en) 2006-12-18 2007-12-14 Rotary drive assembly for a drill rod

Country Status (8)

Country Link
US (1) US7770659B2 (pl)
EP (1) EP1936109B1 (pl)
CN (1) CN101235704B (pl)
AT (1) ATE431895T1 (pl)
DE (1) DE502006003780D1 (pl)
ES (1) ES2325453T3 (pl)
PL (1) PL1936109T3 (pl)
PT (1) PT1936109E (pl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140102799A1 (en) * 2012-10-12 2014-04-17 Vermeer Manufacturing Company Dual Drive Directional Drilling System
US20190085638A1 (en) * 2017-09-19 2019-03-21 Eurodrill Gmbh Double head drilling device and method for producing a bore
US10711520B2 (en) 2017-05-01 2020-07-14 Vermeer Manufacturing Company Dual rod directional drilling system
US11149501B2 (en) 2019-03-14 2021-10-19 Vermeer Manufacturing Company Rod coupler and coupled rod assembly
US11180962B2 (en) 2018-11-26 2021-11-23 Vermeer Manufacturing Company Dual rod directional drilling system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034083B4 (de) * 2008-07-21 2012-08-02 Tracto-Technik Gmbh & Co. Kg Erdbohrvorrichtung
FR2935015B1 (fr) 2008-08-18 2010-11-05 Gerard Arsonnet Dispositif pour la realisation d'un puits dans un sol
FR2951221B1 (fr) 2009-10-09 2011-12-09 Gerard Arsonnet Dispositif d'accouplement entre un ensemble de train de tubes et de train de tiges et les moyens de commande en rotation de ces trains
CN102134964B (zh) * 2011-04-25 2012-11-28 中国地质大学（武汉） 一种双壁心轴岩芯钻机动力头
CN107795285B (zh) * 2016-03-11 2019-07-02 淮北四兴工贸有限责任公司 一种钻井钻柱的旋转驱动和推送机构
CN106089226A (zh) * 2016-08-16 2016-11-09 江苏德航工程机械装备有限公司 一种非开挖设备的推拉旋转机构
EP4033067B1 (de) 2021-01-21 2024-06-19 EURODRILL GmbH Drehantriebsanordnung für ein bohrgestänge
EP4339417A1 (de) 2022-09-14 2024-03-20 Eurodrill GmbH Spannkopfanordnung zum spannen eines bohrgestängeelemtes

Citations (11)

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US3322466A (en) * 1963-12-30 1967-05-30 Gewerk Eisenhuette Westfalia Mining machine with concentric relatively variably rotated heads
US3565190A (en) * 1968-03-07 1971-02-23 Sanwa Kizai Co Ltd Auger-type boring machines
US5358060A (en) * 1992-06-16 1994-10-25 Furukawa Co., Ltd. Successive hole boring machine and lost strike preventing device for successive hole boring machine
DE4402487A1 (de) 1993-12-29 1995-07-06 Interoc Vertriebsgesellschaft Kompaktbohreinheit für gegenläufiges Überlagerungsbohren auf Kleinbohrgeräten
DE19704263C1 (de) 1997-02-05 1998-08-13 Klemm Guenter W Bohrvorrichtung
DE19732479C1 (de) 1997-07-29 1999-04-08 Klemm Guenter Bohrvorrichtung
US6079906A (en) * 1997-01-10 2000-06-27 Herrero Codina; Juan Vicente Method for making foundation piling with drilling machines
DE19906687A1 (de) 1999-02-18 2000-08-24 Klemm Bohrtech Doppelkopfbohrvorrichtung kurzer Bauart
DE10005475A1 (de) 2000-02-08 2001-08-09 Guenter Klemm Bohrvorrichtung
US7093679B1 (en) * 2003-06-05 2006-08-22 Watson Incorporated Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table
US7389831B2 (en) * 2004-04-14 2008-06-24 The Charles Machine Works, Inc. Dual-member auger boring system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322466A (en) * 1963-12-30 1967-05-30 Gewerk Eisenhuette Westfalia Mining machine with concentric relatively variably rotated heads
US3565190A (en) * 1968-03-07 1971-02-23 Sanwa Kizai Co Ltd Auger-type boring machines
US5358060A (en) * 1992-06-16 1994-10-25 Furukawa Co., Ltd. Successive hole boring machine and lost strike preventing device for successive hole boring machine
DE4402487A1 (de) 1993-12-29 1995-07-06 Interoc Vertriebsgesellschaft Kompaktbohreinheit für gegenläufiges Überlagerungsbohren auf Kleinbohrgeräten
US6079906A (en) * 1997-01-10 2000-06-27 Herrero Codina; Juan Vicente Method for making foundation piling with drilling machines
DE19704263C1 (de) 1997-02-05 1998-08-13 Klemm Guenter W Bohrvorrichtung
DE19732479C1 (de) 1997-07-29 1999-04-08 Klemm Guenter Bohrvorrichtung
DE19906687A1 (de) 1999-02-18 2000-08-24 Klemm Bohrtech Doppelkopfbohrvorrichtung kurzer Bauart
DE10005475A1 (de) 2000-02-08 2001-08-09 Guenter Klemm Bohrvorrichtung
EP1124037A1 (de) 2000-02-08 2001-08-16 Günter Prof. Dr.-Ing. Klemm Bohrvorrichtung
US7093679B1 (en) * 2003-06-05 2006-08-22 Watson Incorporated Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table
US7389831B2 (en) * 2004-04-14 2008-06-24 The Charles Machine Works, Inc. Dual-member auger boring system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140102799A1 (en) * 2012-10-12 2014-04-17 Vermeer Manufacturing Company Dual Drive Directional Drilling System
US9127510B2 (en) * 2012-10-12 2015-09-08 Vermeer Manufacturing Company Dual drive directional drilling system
US10711520B2 (en) 2017-05-01 2020-07-14 Vermeer Manufacturing Company Dual rod directional drilling system
US10711521B2 (en) 2017-05-01 2020-07-14 Vermeer Manufacturing Company Dual rod directional drilling system
US10851588B2 (en) 2017-05-01 2020-12-01 Vermeer Manufacturing Company Dual rod directional drilling system
US10961779B2 (en) 2017-05-01 2021-03-30 Vermeer Manufacturing Company Dual rod directional drilling system
US11098530B2 (en) 2017-05-01 2021-08-24 Vermeer Manufacturing Company Dual rod directional drilling system
US11808151B2 (en) 2017-05-01 2023-11-07 Vermeer Manufacturing Company Dual rod directional drilling system
US20190085638A1 (en) * 2017-09-19 2019-03-21 Eurodrill Gmbh Double head drilling device and method for producing a bore
US10837231B2 (en) * 2017-09-19 2020-11-17 Eurodrill Gmbh Double head drilling device and method for producing a bore
US11180962B2 (en) 2018-11-26 2021-11-23 Vermeer Manufacturing Company Dual rod directional drilling system
US11149501B2 (en) 2019-03-14 2021-10-19 Vermeer Manufacturing Company Rod coupler and coupled rod assembly

Also Published As

Publication number Publication date
CN101235704B (zh) 2013-01-23
US20080164044A1 (en) 2008-07-10
ATE431895T1 (de) 2009-06-15
DE502006003780D1 (de) 2009-07-02
PT1936109E (pt) 2009-06-05
PL1936109T3 (pl) 2009-08-31
ES2325453T3 (es) 2009-09-04
EP1936109A1 (de) 2008-06-25
EP1936109B1 (de) 2009-05-20
CN101235704A (zh) 2008-08-06

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